A dynamic model of power transformers

Author

Tran-Quoc, T. ; Pierrat, L. ; Montmeat, A. ; Huet, O.

Author_Institution

Electr. de France, Grenoble, France

Volume

1

fYear

1996

fDate

13-16 May 1996

Firstpage

313

Abstract

This paper presents a new model for representing the instantaneous magnetization characteristics of transformers by taking into account only the rms voltage, current and no-load losses values. These values are easy to obtain from measurements. The model takes into account the magnetization history. The paper gives a simple procedure to build the saturation curve and the hysteresis loops of transformer iron core. By using the proposed model, this paper presents the applications to calculate inrush current and study ferroresonance phenomenon in three-phase transformers

Keywords

ferroresonance; losses; magnetisation; power transformers; transformer cores; current; dynamic model; ferroresonance phenomenon; hysteresis loops; inrush current calculation; instantaneous magnetization characteristics; magnetization; no-load losses; power transformers; rms voltage; saturation curve; three-phase transformers; transformer iron core; Ferroresonance; History; Hysteresis; Iron; Magnetic cores; Magnetization; Phase transformers; Power transformers; Surges; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference, 1996. MELECON '96., 8th Mediterranean

Conference_Location

Bari

Print_ISBN

0-7803-3109-5

Type

conf

DOI

10.1109/MELCON.1996.551547

Filename

551547